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1
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I have attached the demo "Checkbox Binding". We first saw this behavior in our application but I was able to reproduce the behavior in your demo application.

WinForms

.NET Core 3.1

C#


Have multiple parent nodes in a TreeViewAdv.

Each parent node has multiple children.

The Parent nodes have ShowCheckBox=false

The Child nodes have ShowCheckBox=true

Click the first child under a parent node.

Expected: That child's checkbox is checked

Actual: All the children under that parent get checkboxes checked.